About these parts
The fourth-generation 4Runner ran from 2003 through 2009 on Toyota's N210 platform, offered with the 4.0L V6 and, in early years, a 4.7L V8. It shares that platform with the Lexus GX470, which is why parts often fit both.
The fifth generation that followed in 2010 is a different platform — 4th Gen parts do not carry over.